Github user mattyb149 commented on a diff in the pull request: https://github.com/apache/nifi/pull/255#discussion_r67277159 --- Diff: nifi-nar-bundles/nifi-elasticsearch-bundle/nifi-elasticsearch-processors/src/main/java/org/apache/nifi/processors/elasticsearch/PutElasticsearch.java --- @@ -178,8 +190,20 @@ public void onTrigger(final ProcessContext context, final ProcessSession session public void process(final InputStream in) throws IOException { String json = IOUtils.toString(in, charset) .replace("\r\n", " ").replace('\n', ' ').replace('\r', ' '); - bulk.add(esClient.get().prepareIndex(index, docType, id) - .setSource(json.getBytes(charset))); + + if (indexOp.equalsIgnoreCase("index")) { + bulk.add(esClient.get().prepareIndex(index, docType, id) + .setSource(json.getBytes(charset))); + } else if (indexOp.equalsIgnoreCase("upsert")) { --- End diff -- I haven;t seen a difference in behavior between index and upsert, I tried setting the document identifier attribute to a constant number. What should I do to try upsert or update?
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